Improvement in fire-proof paints



UNITED STATES PATENT QFFICE.

JOHN 0. SMITH, OF DUNKIRK, NEW YORK.

IMPROVEMENT IN FIRE-PROOF PAINTS.

Specification forming part of Letters Patent No. 157,083, dated November24, 1874; application filed August 8, 1874.

To all whom it may concern Be it known that I, J onx CARROLL SMITH, ofthe village of Dunkirk, Chautauqua county and State of New York, haveinvented a certain compound called Climatic and Fire-Proof Paint, to beused instead of the ordinary paints for covering and preserving thesurface of woods and other material, of which the following is aspecification:

The nature of the invention consists in mixing together the severalingredients hereinafter mentioned in such quantities and proportions asto produce a fluid or paint which, when applied and dried, shall beproof against the weather and against the ordinary heat from fires, andat the same time be more economical in its preparation.

To prepare the climatic and fire-proof paint take the followingingredients, in the proportions named, and mix as directed:

Take oxide of calcium, one hundred pounds; paris-White, eleven hundredpounds; oxide of zinc, five hundredpounds; chloride of sodium, tenpounds. Add to this water sufficient to form a thick paste andthoroughly mix the same, taking care, while the ingredients are slaking,to keep them covered, so as to retain the steam. To this mixture addtwenty-five gallons of crude petroleum.

Then take of sulphate of zinc, ten pounds; biborate of soda, ten pounds;carbonate of potash, five pounds; sulphate of iron, five pounds. Add tothese last-named ingredients sixty gallons of hot Water and thoroughlymix. When this second mass is mixed, then add it to the first andthoroughly incorporate them together.

Now take the following ingredients: Tungstate of soda, two pounds;gelatine, five pounds; muriatic acid, one-quarter of a pound, anddissolve them in ten gallons of hot water; then add them to the unitedfirstmentioned two mixtures. To each gallon of the whole add one gallonof raw coal-tar, or more or less, as the color desired may require; orthe whole may be tinged or colored with lead, oil, or other ingredients.

This combination secures a paint elastic in its nature, very durable inits quality, and weather and fire proof, and may be applied to nearlyall the uses of ordinary paints, being cheaper in its composition andmore durable.

I claim- As a composition of matter for fire and climate proof paint,quicklime, paris-White, oxide of zinc, common table-salt, sulphate ofzinc, borax, carbonate of potash, sulphate of iron, tungstate of soda,gelatine, muriatic acid, crude petroleum, coal-tar, and water, all inthe proportions hereinbefore stated.

JOHN 0. SMITH.

Witnesses:

F. J. FRILLIE, JAMEs SHERWOOD.

